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- Kostas Kleidis, Apostolos Kuiroukidis, Demetrios B. Papadopoulos, Loukas Vlahos
- 2005

We study the linear magnetohydrodynamic (MHD) equations, both in the Newtonian and the general-relativistic limit, as regards a viscous magnetized fluid of finite conductivity and discuss instabilityâ€¦ (More)

- Loukas Vlahos
- 2000

A set-up is introduced which can be superimposed onto the existing solar flare cellular automata (CA) models, and which specifies the interpretation of the modelâ€™s variables. It extends the CAâ€¦ (More)

- Marco Onofri, Heinz Isliker, Loukas Vlahos
- Physical review letters
- 2006

Electron and proton acceleration in three-dimensional electric and magnetic fields is studied through test particle simulations. The fields are obtained by a three-dimensional magnetohydrodynamicâ€¦ (More)

We investigate the statistical properties of possible magnetic discontinuities in two solar active regions over the course of several hours. We use linear force-free extrapolations to calculate theâ€¦ (More)

It has been proposed that flares in the solar corona may well be a result of an internal self-organized critical (SOC) process in active regions. We have developed a cellular automaton SOC model thatâ€¦ (More)

The sharp magnetic discontinuities that naturally appear in solar magnetic flux tubes driven by turbulent photospheric motions are associated with intense currents. Parker proposed that theseâ€¦ (More)

We study the linear magneto-hydrodynamical behaviour of a Newtonian cosmology with a viscous magnetized fluid of finite conductivity and generalise the Jeans instability criterion. The presence ofâ€¦ (More)

- Loukas Vlahos, Sam Krucker, Peter J. Cargill
- 2007

1 Department of Physics, University of Thessaloniki, 54124 Thessaloniki, Greece vlahos@astro.auth.gr 2 Space Physics Research Group, University of California, Berkeley, USAâ€¦ (More)

Self-Organised Criticality (SOC), embedded in cellular automata models, has been so far viewed as an attractive phenomenological approach for studying the statistical behaviour of flaring activity inâ€¦ (More)

- Kaspar Arzner, Loukas Vlahos, Bernard Knaepen, Nicolas Denewet
- PARA
- 2004

We use exact orbit integration to investigate particle acceleration in a Gauss eld proxy of magnetohydrodynamic (MHD) turbulence. Regions where the electric current exceeds a critical threshold areâ€¦ (More)